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Subject: Fw: CAP SC wording
Hi, Here is Eliot's draft text submission for the new sections in the Practices Guide. ____________________ "*Distinguishing High-Priority CAP Alerts* Some CAP implementors are seeking convergence on practices across alerting authorities internationally for distinguishing a subset of CAP alerts that are 'high-priority'. In this context. 'high-priority' alerts are those that could trigger a siren or other highly intrusive method to command the immediate attention of people at risk in the alerting area. Agreed criteria for distinguishing high-priority alerts is important because such alerts are typically due to a near-term life-critical situation. Without such criteria, alerting authorities at the operational level (fire chiefs, police chiefs, mayors...) would be more prone to confusion and mistakes such as triggering sirens unintentionally or neglecting to trigger sirens that should have been triggered. Crucial implementation differences could also arise across alerting system implementors (e.g., social media communicators, app developers, siren programmers, cell phone services, television and radio broadcasters, among many others...). Such differences would quickly lead to public confusion as media transmission of any particular alert ends up being patchy, e.g. a siren sounds but cell phones don't get SMS messages; crawl text shows on TV but there is no radio announcement, some apps act on an alert while others don't, etc. As an example practice, CAP implementors in the United States adopted a fairly simple criteria for designating an alert as high-priority in this sense: situations in which people need to act immediately or within the next hour, in response to an extraordinary or significant threat, that is already observed or is likely to occur This criteria is implemented directly in CAP by selecting either of the top two levels of Urgency, Severity, and Certainty (as defined in the CAP data dictionary for those elements). This practice is further discussed in the GDPC Guide for Identifying High Priority Public Warnings <http://preparecenter.org/resources/universal-app-identifying-high-priority-public-warnings>. Readers who are interested promulgating guidance on distinguishing high-priority CAP alerts should contact the OASIS EM-TC public comment list.“ ____________________ “*Cell Broadcast Complements a CAP-enabled Alerting System* Alerting authorities in the United States and several other countries disseminate high-priority CAP alerts so that they can be received by every cell phone in the alerting area. This very useful dissemination method is accomplished by use of "Cell Broadcast", a standard message delivery service over cellular phone systems. When Cell Broadcast is used for public alerting, the warning message goes to each cellular base station (cell tower) in the alerting area. That base station then sends the warning message to all cell phones in its range. The warning message is delivered whether or not the phone owner subscribes to the particular cellular service, and delivery works for plain cell phones as well as smart phones. It is also important to note that the base station sends the warning message *immediately* as a broadcast, which is much faster and more reliable than calling perhaps thousands of individual cell phones, one by one. For these reasons, cell broadcast is ideal for severe emergencies, particularly because in this siutation cellular message traffic is often heavy and the cellular network itself may have been degraded by the emergency. Delivery of warning messages via Cell Broadcast is relatively straightforward in any alerting system that is CAP-enabled because the information in a CAP message is structured for automated processing. Readers who are interested in promulgating guidance on how Cell Broadcast complements a CAP-enabled alerting system should contact the OASIS EM-TC public comment list." ____________________ -- Jacob Westfall <jake@jpw.biz>
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